CN101256302A - Semipermeable type liquid crystal display panel and LCD device containing the same - Google Patents
Semipermeable type liquid crystal display panel and LCD device containing the same Download PDFInfo
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- CN101256302A CN101256302A CNA2007100849850A CN200710084985A CN101256302A CN 101256302 A CN101256302 A CN 101256302A CN A2007100849850 A CNA2007100849850 A CN A2007100849850A CN 200710084985 A CN200710084985 A CN 200710084985A CN 101256302 A CN101256302 A CN 101256302A
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Abstract
A semipermeable liquid crystal display panel comprises a first substrate and second substrate, a liquid crystal layer being set between the two substrates. The second substrate comprises filter structure provided with a plurality of optical filtering elements for making the color light of at least three colors penetrate through the filter structure, Each optical filtering element comprises at least two reflecting layers and a clearance layer between the two reflecting layers. Wherein, when light source is incident from the first substrate side or second substrate side, the color light in the light source belonging to three colors respectively passes through the correspondent optical filtering element. The light source is backlight source of the liquid crystal display device or light source of external environment.
Description
Technical field
The present invention relates to a kind of semi-penetrated liquid crystal display panel and the liquid crystal indicator of using it, particularly relevant for a kind of tool high-penetrability and the good semi-penetrated liquid crystal display panel and the liquid crystal indicator of using it of utilization factor backlight.
Background technology
General semi-permeable LCD device mainly can utilize two kinds of technology to reach partly and penetrate, the purpose of half reflection, and first kind is to use the semi-penetration semi-reflective plate, and second kind then is the technology that pixel is divided into penetrating region and echo area.
Please refer to Fig. 1, it has illustrated the cut-away view of the half-penetration type display panel that has the semi-penetration semi-reflective plate traditionally.As shown in Figure 1, first substrate 11 of semi-penetrated liquid crystal display panel 1 traditionally is provided with colored filter 12, the second substrates 13 and is provided with semi-penetration semi-reflective plate 14, and backlight (not illustrating) is arranged at second substrate, 13 sides more.Colored filter 12 for example comprises red filter layer 121, green filter layer 122 and blue color filter layer 123.Under the general modfel when backlight is opened, the light of backlight L can penetrate semi-penetration semi-reflective plate 14 on second substrate 13 and the colored filter 12 on first substrate 11 with display color.In order to reach the effect of semi-penetration semi-reflective, the penetrance of general semi-penetration semi-reflective plate 14 is not high, makes the utilization factor of backlight L not good.Certainly, under the reflective-mode when backlight L closes, utilize the efficient of environment light source L ' also not high.
Other please refer to Fig. 2, and it has illustrated the cut-away view of the half-penetration type display panel that has penetrating region and echo area traditionally.As shown in Figure 2, also colored filter 22 can be set on first substrate 21 of another kind of semi-penetrated liquid crystal display panel 2 traditionally, colored filter 12 for example comprises red filter layer 221, green filter layer 222 and blue color filter layer 223.A plurality of reflecting plates 24 are set on second substrate 23 to be shown with corresponding each dot structure.These reflecting plates 24 can account for the part ratio of each dot structure area.In generally penetrating under the pattern, backlight L can penetrate does not have the partial pixel of reflecting plate structure with display frame.Under reflective-mode, the light source L ' of external environment condition penetrates first substrate 21 also to reflect with display frame through the reflecting plate on second substrate 23 24.Yet because reflecting plate 24 can impact the aperture opening ratio on each dot structure, this kind design also can cause the not good problem of display effect.
In addition, the colored filter more than 12,22 shown in Fig. 1～2 is made with pigment (pigment) coating, and it has light absorbing characteristic, and can influence light utilization efficiency, makes the color representation of the liquid crystal indicator that utilizes semi-penetrated liquid crystal display panel 1 or 2 poor.For briliancy and the display characteristic that reaches customer requirement, backlight module certainly will need more to drive electric energy, makes more power consumption of entire liquid crystal display device.
Summary of the invention
The present invention relates to a kind of semi-penetrated liquid crystal display panel and the liquid crystal indicator of using it, by on the substrate of semi-penetrated liquid crystal display panel filtering structure being set, this filtering structure has a plurality of optical lightscreening elements to select that the visible light of certain tones wide region is penetrated.The optical lightscreening element is made up of two reflection horizon and a clearance layer, and the allotment of its material and thickness can be controlled the frequency spectrum that penetrates of visible light, thereby has the effect that shows indivedual colors.Because the light usability height of optical lightscreening element makes penetrability good.In addition, because the backlight module of liquid crystal indicator can be done secondary reflection and utilization to the backlight that is reflected by display panel again, and then utilization factor backlight is increased.
The present invention proposes a kind of semi-penetrated liquid crystal display panel, and it comprises first substrate and second substrate, has liquid crystal layer between first substrate and second substrate.Second substrate comprises filtering structure, and this filtering structure comprises a plurality of optical lightscreening elements, and these optical lightscreening elements can make the coloured light of at least three looks in the light source penetrate filtering structure.These optical lightscreening elements respectively comprise at least two reflection horizon and a clearance layer, and clearance layer is between two reflection horizon.
The present invention proposes a kind of liquid crystal indicator again, and it comprises semi-penetrated liquid crystal display panel and backlight module, and backlight module is arranged at a side of semi-penetrated liquid crystal display panel.Semi-penetrated liquid crystal display panel comprises first substrate and second substrate, has liquid crystal layer between first substrate and second substrate.Second substrate comprises filtering structure, and this filtering structure comprises a plurality of optical lightscreening elements, and these optical lightscreening elements can make the coloured light of at least three looks in the light source penetrate filtering structure.Each optical lightscreening element respectively comprises at least two reflection horizon and clearance layer, and clearance layer is between two reflection horizon.
For foregoing of the present invention can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below:
Description of drawings
Fig. 1 has illustrated the cut-away view of the half-penetration type display panel that has the semi-penetration semi-reflective plate traditionally.
Fig. 2 has illustrated the cut-away view of the half-penetration type display panel that has penetrating region and echo area traditionally.
Fig. 3 illustrates the cut-away view according to the semi-penetrated liquid crystal display panel of the preferred embodiment of the present invention.
Fig. 4 has illustrated the cut-away view of the filtering structure of Fig. 3.
The optical lightscreening element that Fig. 5 A～5C has illustrated Fig. 4 else penetrates the spectrogram of light.
Fig. 6 A～6C has illustrated optical lightscreening element other catoptrical spectrogram of Fig. 4.
Fig. 7 A has illustrated according to the cut-away view of liquid crystal indicator of the present invention in reflective-mode.
Fig. 7 B has illustrated the liquid crystal indicator of Fig. 7 A in the cut-away view of the pattern of penetrating.
Fig. 8 has illustrated the display panel of Fig. 7 B and backlight module apart from the cut-away view that strengthens.
Description of reference numerals
1,2,3: semi-penetrated liquid crystal display panel 11,21,31: the first substrates
12,22: colored filter 13,23,33: the second substrates
14: semi-penetration semi-reflective plate 24: reflecting plate
35: filtering structure 121,221: red filter layer
122,222: green filter layer 123,223: blue color filter layer
350: black matrix" 351～353: the optical lightscreening element
351A, 351B, 352A, 352B, 353A, 353B: reflection horizon
351C～353C: clearance layer 400: liquid crystal indicator
410: backlight module P: pixel cell
Embodiment
Please refer to Fig. 3, it illustrates the cut-away view according to the semi-penetrated liquid crystal display panel of the preferred embodiment of the present invention.As shown in Figure 3, semi-penetrated liquid crystal display panel 3 comprises and is gripped with liquid crystal layer (indicating) between first substrate 31 that be arranged in parallel and second substrate, 33, the first substrates 31 and second substrate 33.Second substrate 33 comprises filtering structure 35, and this filtering structure 35 comprises a plurality of optical lightscreening element 351～353 (see figure 4)s.Each optical lightscreening element 351～353 all comprises at least two reflection horizon and a clearance layer, and clearance layer is between two reflection horizon.
By suitable design, when light source passes other optical lightscreening element 351～353, can demonstrate different colors.As shown in Figure 3, aforesaid filtering structure 35 for example comprises black matrix" 350, can show red optical lightscreening element 351, can show green optical lightscreening element 352 and can show blue optical lightscreening element 353 that these optical lightscreening elements 351～353 are arranged in the black matrix" 350 and come to separate each other.Each optical lightscreening element 351～353 is all corresponding dot structure configuration in display panel 1.And please refer to Fig. 4, it has illustrated the cut-away view of the filtering structure of Fig. 3.As shown in Figure 4, each optical lightscreening element 351～353 comprises two reflection horizon and a clearance layer, under the designs such as structure, material and thickness of optical lightscreening element 351～353, light source penetrated these optical lightscreening elements 351～353 and all had the different frequency spectrums that penetrates.Certainly, on practice, can make each optical lightscreening element 351～353 all have two reflection horizon 351A, 351B, 352A, 352B, 353A, the 353B of identical material, thickness, have only the Thickness Design of its clearance layer 351C, 352C, 353C different, to reach the effect that shows different colours.Preferably, reflection horizon other thickness be about 5 nanometers to 60 nanometers (nm), and the thickness of clearance layer is that about 10nm is to 900nm.The material in reflection horizon for example comprises silver (Ag) or silver alloy, and clearance layer then for example is dielectric layer or metallic conduction oxide.The material of aforementioned dielectric layer for example comprises magnesium fluoride (MgF
2), silicon dioxide (SiO
2), aluminium oxide (Al
2O
3), titania (TiO
2), zirconium dioxide (ZrO
2) or niobium pentaoxide (Nb
2O
5) wait material.The material of metallic conduction oxide then comprise tin indium oxide (indium tin oxide, ITO), indium zinc oxide (indium zinc oxide, IZO) or aluminum zinc oxide (aluminum zinc oxide AZO) waits material.
Table 1
| Film layer structure | Material | Thickness range (nm) |
| All reflection horizon | Silver | 5～60 |
| |
Silicon dioxide | 150-200 |
| |
Silicon dioxide | 110-160 |
| |
Silicon dioxide | 70-110 |
Light about optical lightscreening element 351～353 penetrates and reflection characteristic, below illustrates.Please refer to table 1 and Fig. 5 A～5C, the optical lightscreening element that Fig. 5 A～5C has illustrated Fig. 4 else penetrates the spectrogram of light, each rete material and Thickness Design of table 1 an explanation optical lightscreening element 351～353.In the general visible light, the wavelength of ruddiness is about 650 nanometers, and the wavelength of green glow is about 546.1 nanometers, and the wavelength of blue light is about 450 nanometers.Shine filtering structure 13 in this with white light source, and measurement light source is through the penetrance of the various wavelength light behind each optical lightscreening element 351～353.Shown in Fig. 5 A, at the thickness of clearance layer 351C during between 150-200nm, the wavelength penetrance of the visible light between 650nm～670nm approximately is the highest, shows the visible light that is similar to ruddiness this moment, optical lightscreening element 351 thereby have and show red effect.Shown in Fig. 5 B, during between 110-160nm, near the penetrance of the visible light of wavelength 550nm is the highest, shows the visible light that is similar to green glow this moment at the thickness of clearance layer 352C, optical lightscreening element 352 thereby have and show green effect.Shown in Fig. 5 C, at the thickness of clearance layer 353C during between 70-110nm, the wavelength penetrance of the visible light between 420nm～440nm approximately is the highest, shows the visible light that is similar to blue light this moment, and optical lightscreening element 353 has and shows blue effect.Because the light of optical lightscreening element 351～353 penetrates spectrum and has narrower frequency range, its colour purity is higher and have a preferable display effect.
Please refer to Fig. 6 A～6C again, it has illustrated optical lightscreening element other catoptrical spectrogram of Fig. 4.Shown in Fig. 6 A figure, optical lightscreening element 351 can make wavelength penetrate between the visible light (being similar to ruddiness) of 650nm～670nm, can show the mixed light (for example cyan light) of green glow and blue light after making light source via optical lightscreening element 351 reflection.Similarly, shown in Fig. 6 B～6C, near the visible light (being similar to green glow) that optical lightscreening element 352 can make wavelength be positioned at the 550nm penetrates, and can show the mixed light (for example purple light) of ruddiness and blue light after making light source via 352 reflections of optical lightscreening element.353 of optical lightscreening elements can make wavelength approximately the visible light (being similar to blue light) in 420nm～440nm scope penetrate, can show the mixed light (for example sodium yellow) of ruddiness and green glow after making light source via optical lightscreening element 353 reflection.If light source is the side incident by filtering structure 35, can show the color of corresponding each optical lightscreening element 351～353 in the opposite side of filtering structure 35, and can show because aforesaid all mixed lights mix once more near white monochromatic light at the incident end of light source.
Certainly, except can showing above three kinds of colors (red, green, blue), also can show that to reach other colors for example are the effects of yellow, cyan or purple etc. by the design of different reflection horizon and clearance layer material and thickness.In addition, except showing three kinds of colors, also can show the color more than three kinds.
The semi-penetrated liquid crystal display panel 1 of present embodiment is arranged in pairs or groups backlight module usually to be applied in the display device.Please refer to Fig. 7 A～7B, Fig. 7 A has illustrated according to the cut-away view of liquid crystal indicator of the present invention in reflective-mode, and Fig. 7 B has illustrated the liquid crystal indicator of Fig. 7 A in the cut-away view of the pattern of penetrating.The backlight module 410 of liquid crystal indicator 400 is arranged at second substrate, 33 sides of semi-penetrated liquid crystal display panel 3, for example is made of the pixel cell P of demonstration three optical lightscreening elements, 351～353 pairing three sub-pixel structures.Shown in Fig. 7 A, backlight module 410 is closed under reflective-mode, is at this moment to project display panel 3 by external light source to show.Because optical lightscreening element 351～353 has filter actions such as selectivity penetrates, reflection, after external light source incides second substrate 33 by first substrate, 31 sides, optical lightscreening element 351～353 can reflect away corresponding coloured light filtering simultaneously with other coloured light.For example can reflect blue or green light Lc corresponding to optical lightscreening element 351, optical lightscreening element 352 can reflect purple light Lm, and 353 of optical lightscreening elements can reflect yellow Ly.Under the colour mixture of aforementioned three kinds of coloured light Lc, Lm, Ly, shown when reflective-mode is the sprite of nearly black and white.
Under the pattern of penetrating (general modfel), shown in Fig. 7 B, light source is gone into backlight module 410 by second substrate, 33 side seals to be provided, ruddiness Lr in the light source, green glow Lg and blue light Lb can penetrate corresponding optical lightscreening element 351～353 respectively, by toppling over adjusting red, green and blue ratio among each pixel cell P of the liquid crystal molecule of control liquid crystal layer, and then reach the purpose of display color picture.
For being described in more detail the effect of present embodiment, referring again to Fig. 8, it has illustrated the display panel of Fig. 7 B and backlight module apart from the cut-away view that strengthens, and is to be illustrated with the effect of backlight through optical lightscreening element 352 at this.As shown in Figure 8, when backlight L throws, have (only showing the reflected light of two path directions) such as reflected light L1 that green glow Lg (shown in Fig. 7 B) mixes with multiband or L2.This reflected light L1 or L2 utilize the reflection effect that can be divided into two paths again through the reflection of backlight module 210, first path is then to be optical lightscreening element 351 and 353 by optical lightscreening element 352 both sides by identical optical lightscreening element 352, the second paths again.Because this reflected light L1 or L2 comprise the green glow of ruddiness, blue light and part, therefore work as reflected light L1 with the first path reflex time, can produce the gain effect that green glow passes through again; When reflected light L2 with the second path reflex time, then significantly increase the light utilization efficiency of ruddiness and blue light.In the same manner, when light penetrates on the filter light structure 35 other optical lightscreening element 351,353 etc., also possess the effect that is equal to is arranged.Therefore, under reflection effect by backlight module 210, the ruddiness Lr ' that can be enhanced, green glow Lg ' and blue light Lb '.In addition, when the resolution of display panel 3 was high more, because the size of its dot structure P is more little, the reflected light L2 in second path utilization factor again can be high more.
Disclosed semi-penetrated liquid crystal display panel of the above embodiment of the present invention and the liquid crystal indicator of using it are on the substrate of display panel filtering structure to be set, this filtering structure have a plurality of optical lightscreening elements in order to penetrate, reflection source.By designs such as the material of reflection horizon in the optical lightscreening element and clearance layer, thickness, the optical lightscreening element can be selected to allow the visible light of specific frequency range penetrate or reflect the effect that shows particular color to reach.Because the penetrability of optical lightscreening element is good, the colour purity height of display frame.The backlight module of liquid crystal indicator is arranged at the substrate-side with filtering structure, by the reflection that comes from the backlight module backlight, can offer on the display panel other pixels further and use, and utilization factor backlight is good and can reduce energy loss.
In sum, though the present invention discloses as above with a preferred embodiment, so it is not in order to limit the present invention.The technician of the technical field of the invention, without departing from the spirit and scope of the present invention, when doing various changes and retouching.Therefore, protection scope of the present invention is worked as by being as the criterion that accompanying Claim defined.
Claims (17)
1. semi-penetrated liquid crystal display panel comprises:
First substrate; And
Second substrate, and be gripped with liquid crystal layer between this first substrate, this second substrate comprises filtering structure, this filtering structure comprises a plurality of optical lightscreening elements, this optical lightscreening element makes the coloured light of at least three looks in the light source penetrate this filtering structure, this optical lightscreening element respectively comprises at least two reflection horizon and a clearance layer, and this clearance layer is between these two reflection horizon.
2. display panel as claimed in claim 1 wherein comprises a plurality of sub-pixel structures on this first substrate and this second substrate, respectively respectively this sub-pixel structure setting of this optical lightscreening element correspondence.
3. display panel as claimed in claim 1, wherein the material in these two reflection horizon comprises silver or silver alloy.
4. display panel as claimed in claim 1, wherein this clearance layer comprises dielectric layer or metallic conduction oxide.
5. display panel as claimed in claim 4, wherein the material of this dielectric layer comprises magnesium fluoride, silicon dioxide, aluminium oxide, titania, zirconium dioxide or niobium pentaoxide.
6. display panel as claimed in claim 4, wherein the material of this metallic conduction oxide comprises tin indium oxide, indium zinc oxide or aluminum zinc oxide.
7. display panel as claimed in claim 1, wherein these two reflection horizon other thickness is that about 5 nanometers are to 60 nanometers.
8. display panel as claimed in claim 1, wherein the thickness of this clearance layer is that about 10 nanometers are to 900 nanometers.
9. liquid crystal indicator comprises:
Semi-penetrated liquid crystal display panel comprises:
First substrate; And
Second substrate, be gripped with liquid crystal layer between this first substrate and this second substrate, this second substrate comprises filtering structure, this filtering structure comprises a plurality of optical lightscreening elements, this optical lightscreening element makes the coloured light of at least three looks in the light source penetrate this filtering structure, this optical lightscreening element respectively comprises at least two reflection horizon and a clearance layer, and this clearance layer is between these two reflection horizon; And
Backlight module is arranged at a side of this semi-penetrated liquid crystal display panel;
Wherein, when this backlight module was opened, the coloured light that belongs to this three look in its light source passed this optical lightscreening element with corresponding color respectively.
10. display device as claimed in claim 9 wherein comprises a plurality of sub-pixel structures on this first substrate and this second substrate, respectively respectively this sub-pixel structure setting of this optical lightscreening element correspondence.
11. display device as claimed in claim 9, wherein this backlight module is arranged at this second substrate-side.
12. display device as claimed in claim 9, wherein the material in these two reflection horizon comprises silver or silver alloy.
13. display device as claimed in claim 9, wherein this clearance layer comprises dielectric layer or metallic conduction oxide.
14. display device as claimed in claim 13, wherein the material of this dielectric layer comprises magnesium fluoride, silicon dioxide, aluminium oxide, titania, zirconium dioxide or niobium pentaoxide.
15. display device as claimed in claim 13, wherein the material of this metallic conduction oxide comprises tin indium oxide, indium zinc oxide or aluminum zinc oxide.
16. display panel as claimed in claim 9, wherein these two reflection horizon other thickness is that about 5 nanometers are to 60 nanometers.
17. display panel as claimed in claim 9, wherein the thickness of this clearance layer is that about 10 nanometers are to 900 nanometers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100849850A CN101256302A (en) | 2007-02-26 | 2007-02-26 | Semipermeable type liquid crystal display panel and LCD device containing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100849850A CN101256302A (en) | 2007-02-26 | 2007-02-26 | Semipermeable type liquid crystal display panel and LCD device containing the same |
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| Publication Number | Publication Date |
|---|---|
| CN101256302A true CN101256302A (en) | 2008-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100849850A Pending CN101256302A (en) | 2007-02-26 | 2007-02-26 | Semipermeable type liquid crystal display panel and LCD device containing the same |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102566066A (en) * | 2010-12-28 | 2012-07-11 | 索尼公司 | Stereoscopic display unit and barrier device |
| CN102591024A (en) * | 2011-01-05 | 2012-07-18 | 索尼公司 | Display device |
| CN103091758A (en) * | 2013-01-25 | 2013-05-08 | 京东方科技集团股份有限公司 | Color light filter plate and display panel and display device |
| CN103278963A (en) * | 2013-05-23 | 2013-09-04 | 京东方科技集团股份有限公司 | Color filtering array substrate, manufacturing method thereof and display device thereof |
| CN103443691A (en) * | 2011-03-23 | 2013-12-11 | Lg化学株式会社 | Display apparatus |
| CN102566066B (en) * | 2010-12-28 | 2016-12-14 | 索尼公司 | Stereoscopic display unit and barrier device |
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2007
- 2007-02-26 CN CNA2007100849850A patent/CN101256302A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102566066A (en) * | 2010-12-28 | 2012-07-11 | 索尼公司 | Stereoscopic display unit and barrier device |
| CN102566066B (en) * | 2010-12-28 | 2016-12-14 | 索尼公司 | Stereoscopic display unit and barrier device |
| CN102591024A (en) * | 2011-01-05 | 2012-07-18 | 索尼公司 | Display device |
| CN102591024B (en) * | 2011-01-05 | 2016-01-20 | 株式会社日本显示器西 | Display device |
| CN103443691A (en) * | 2011-03-23 | 2013-12-11 | Lg化学株式会社 | Display apparatus |
| CN103443691B (en) * | 2011-03-23 | 2016-02-10 | Lg化学株式会社 | Display device |
| CN103091758A (en) * | 2013-01-25 | 2013-05-08 | 京东方科技集团股份有限公司 | Color light filter plate and display panel and display device |
| CN103278963A (en) * | 2013-05-23 | 2013-09-04 | 京东方科技集团股份有限公司 | Color filtering array substrate, manufacturing method thereof and display device thereof |
| WO2014187090A1 (en) * | 2013-05-23 | 2014-11-27 | 京东方科技集团股份有限公司 | Color filter array substrate, manufacturing method therefor, and display apparatus |
| US9454034B2 (en) | 2013-05-23 | 2016-09-27 | Beijing Boe Display Technology Co., Ltd. | Color filter array substrate, method for fabricating the same and display device |
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Open date: 20080903 |